Saw guard



fel/L.; Z

-OL B, SM1-TH. SAW GUARD.: 'APPLlcATlYoN FILED Dc.1o.1`9z|.

1,428, 9 8 6 s l Patented Sept. 12, 1922.

ATTORNEY Patented Sept. l2, 1922.

UNITED STATI-:s

PATENT OFFICE.

OTTO B. SMITH, OE 'GLEN MORRIS, NEW YORK.

SAW GUARD.

Appiicatin sied December 1o, 1921. semi No. 521,344.

vention can be applied to'other similar rotary y cutters.` It is well known that cutting implelinents -of this `kind are exceedingly dangerous, and that operatives working on or around them are often injured either from coming in` contact with the saw, or from having the stock thrown against them. It Vis not new to employ a guard to prevent a person from being injured by a saw, but such devices are usually rather expensive, difficult to apply and adjust, and frequently interfere with the work. The object of my invention is to produce a very simple, light, and efficient device of this character, which can be easily applied to a circular saw or the like, vwhich will efficiently guard the saw so as to make it practically impossible for an operative tobe accidentally injured by it, and which will not in any way interfere with theL work being done. My invention `is intended to facilitate rapid working, and in carrying it into `effect I place a spreader in the slot of the saw table behind the saw, which will assist in spreading the stock being 'sawn, and which will support a hood and wings which eficiently cover the saw, but which permit the'stock to pass readily through. All of which will be better understood from the description which follows.

Reference is to behad to the accompanying drawings forming a part of this specilication, in which similar reference characters indicate corresponding parts in all the views, Figure 1 is a broken plan view of my invention as applied to a saw and saw table,

' and which is the customary slot 11 in which 'the saw 12 or analogous 'cutter revolves.

In the slot 11 behind the saw I secure a curved spreader 13 which is of about the thickness or perhaps slightly thicker than the saw, and this curves upward and forward over the'saw edge. The spreader can be attached in any suitable way, and I have shown it fastened by bolts 14. VIt will be seen that this will rather facilitate the work of sawing, as the spreader will enter the key made by the saw, and have a tendency to spread the stock so that vrthe saw will not bind. 4 Y

To the upper and forward end` of the spreader I pivot a hood 15 which projects forward `slightly downward over the' saw` edge so as to cover the teeth, as the drawings vclearly show, and while this hood may be 'of any suitable material, and the invention not limited to `any particular structure of hood, still I prefer to make the middle portion 1'6 of wood, and the sides 17 of metal, these being allowed to drop down slightly over the edge of the teeth.

f The hood is pivoted at its 'rear end to the spreader 13 preferably -by a bolt 18 having a wing nut 19 so that the 'hood can be quickly fastened or released for adjustment. It vis adjusted and held at the desired height by a pin 2O which extends through it, and can be made to register with one of Iseveral notch'es21 in the end of the spreader, fand fastened so as to hold the hood in osition. Any'suita'ble bolt 'o'r pin can be use forthe purpose. The spreader also :carries Wings 22 which are pivoted on the bolt 18, and swing up and down oil opp'osite'sides of Vthespread.-

er so as to cover the sides of the same, as shown clearly in Figure 2, and each wing is preferably laminated, having the middle portion 24 of wood or fibre, and the outer layer 23 of metal. However, this is not important, and the wing can be made of any suitable material. It has preferably a curved forward edge 25, so that the stock shown by dotted lines in Figure 2 can, as it is sawn, be pushed readily beneath the wings which will rise up and ride on the stock, but still cover a portion of the saw teeth, as shown by dotted lines in Figure 2. The movement of the wings is limited by the shoulders 26 at the forward end of each wing, which are adapted to abut with the pin 20 aforesaid.

Theinvention is not restricted to the particular means of pivoting or fastening the wings, or the particular means of pivoting or fastening the hood, although I haveoshowln y the preferred way. It is essential, however,

to have the spreader curve up behind Ithe,

saw opposite the teeth thereof, and to have the general arrangement ofhood and Wings I shownand alsoto'have said wingsand hood pivotally 'i and adjustably'suppor'ted on the spreader. l

From the foregoing description it will Y' beiseenthat I have y'provided' a very simple,

inexpensive, andA efficient guard,which can necessarily exposed 'to receive the i ing operated on. ,l A y,

be readily ,applied to a saw, and which permits the saw to be used as vefficienrcly as if no attachment were applied thereto or used'l in connection therewith; and it will further be observed that the simple attachmentshown"covers practically all the saw' except the part ofthe front edge which is stock be- Q1.' Iihe with a' circular saw Orthe lilre,l'o'f amember arranged behind and inv alignment with' theV saw, saidmembercurv'ing upward overthe saw edge, rearwarldly"y extending; wings. .pivoted'oi'iv said n iembe'randadapted to overlap the sides of the saw," andv a' hood pivoted von the. upper end ofsaid member and extended forwardly therefrom over'the'saw edge, said hood beingsupported Hatits "pivoted end only and .o of thespreader and swinging vertically at` its. sides so astooverlap the saw, and a vh`oodfpivoted at the upper partv of the disposed'soas toleavethe' frontV edge of thesawexposed toview.. i

f2'. llheh-xreinv described guard for'saws and the like comprising a spreader adapted to be 'supported behind andfin alignment with the saw, "said spreader being arranged toocurve upoverl the saw edge,A rearwardly l trailing I Wings pivoted on the upper part l. spreader. and extending forwardly there- 4thenpper part o-f the spreader and on opposite sides thereof so as to overlap the saw,a hood pivoted on thevspreader and projecting'forwardly therefrom to cover'the top andsides of the saw leaving the front edge exposed to view, and means for vadjusting the hood. l

et. The combination with a circularsaw or` the like, ofthe spreader secured behind' and in alignment withvthe saw and curving upwardly 'and forwardly oppositeV the saw teeth, `wingspivoted on opposite sides ofy they spreader at'its upper -portion and: ar-

ranged to swing freely and overlap' the. saw, means for restricting the movement of the wings, a hood-pivotally supported on` the upper end ofthe spreader' and projecting forwardly therefrom, said hood being constructed-to overlap the top andsidesof the saw leaving the front edge exposredto view, and meansfor adjusting th'eposition f of the hood.

'5. The combination with a circular saw or the like, of a spreader secured in align mentl with the saw and behindy the same,`

said spreader extendingrupwardjand for-V ward opposite the saw edge, and having notches at itsvforward edge, wings pivoted onfthe side of the spreader and overlapping the rear portion of the'saw, al'iood pivotedk on the spreader and projecting forwardly therefrom, said hood being adapted to cover' thek saw edge, and a pininthe hood adapt'- ed to engage thevnotches of the spreader.

WYitnesses j ERNST VETTER, MATHiAs W. STOCK. 

